318972601 has 2 divisors, whose sum is σ = 318972602. Its totient is φ = 318972600.

The previous prime is 318972593. The next prime is 318972617. The reversal of 318972601 is 106279813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 309056400 + 9916201 = 17580^2 + 3149^2 .

It is an emirp because it is prime and its reverse (106279813) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 318972601 - 2³ = 318972593 is a prime.

It is not a weakly prime, because it can be changed into another prime (318972631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159486300 + 159486301.

It is an arithmetic number, because the mean of its divisors is an integer number (159486301).

Almost surely, 2^318972601 is an apocalyptic number.

It is an amenable number.

318972601 is a deficient number, since it is larger than the sum of its proper divisors (1).

318972601 is an equidigital number, since it uses as much as digits as its factorization.

318972601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 318972601 is about 17859.8040582757. The cubic root of 318972601 is about 683.2575823756.

The spelling of 318972601 in words is "three hundred eighteen million, nine hundred seventy-two thousand, six hundred one".